Port Knocking
SSH port knocking increases security through a sequence of connection attempts that must arrive in the correct order before a port is opened.
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Open to opportunities
// whoami
Joshua Talbot
Ethical Hacker & Penetration Tester
I test networks, applications and infrastructure for weaknesses, then help teams close them before someone with worse intentions finds them first.
50+ machines rooted1 published paperEst. 2017
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Profile
I'm an ethical hacker with a background in unikernel security research, currently building out my penetration testing skills through hands-on labs and personal projects. I like pulling systems apart to understand exactly how they break, then writing up what I learn along the way.
Skills
- IoT
- Raspberry Pi hardware interfaces
- Software development
- Unix application development
- Penetration testing
- Simulated cyberattack testing
Experience
- 2018 – 2019
- Unikernel research and development
- 2018 – 2020
- Published an academic paper
- 2017 – present
- Hack The Box, bWAPP & Juice Shop
Education
- 2021
- Bachelor of Ethical Hacking
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Selected findings
VPS/VPN Security
To secure a VPS, implement strong passwords, timely updates, firewalls and regular backups as a baseline hardening routine.
Read moreNMAP
Nmap helps map networks and detect open ports and services, making it a core tool for security auditing.
Read moreUFW Firewall
UFW simplifies managing iptables rules, giving a straightforward way to block unauthorized access to a host.
Read moreXSS Attacks
Cross-site scripting injects scripts into webpages to steal data or hijack sessions from unsuspecting users.
Read moreSQL Injections
SQL injection occurs when untrusted input is executed as database commands, often exposing far more than intended.
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Contact
talbot@hackersec.xyz
+44 7769 580911